IPA: /ɪˈnɛfəbli/
KK: /ɪˈnɛfəbli/
In a way that is too great or extreme to be expressed in words.
The beauty of the sunset was ineffably stunning, leaving everyone speechless.
Ineffably → It is formed from "in-" (meaning not) and "effabilis" (from Latin, meaning able to be expressed). The word "ineffably" means in a manner that cannot be expressed or described in words.
Think of 'not able to be expressed' — 'in-' means not, and 'effabilis' means able to be expressed. This helps you remember that ineffably refers to something that is beyond words.